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Finding the Fourth Proportional to 12,553.70, 18,830.55 and 9,637.70

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Solution

The fourth proportional to 12,553.70, 18,830.55 and 9,637.70 is: 14,456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.70 : 18,830.55 = 9,637.70 : x
  2. Step 2: Convert to fraction form
    12,553.70/18,830.55 = 9,637.70/x
  3. Step 3: Cross multiply
    12,553.70x = 18,830.55 × 9,637.70
  4. Step 4: Simplify right side
    12,553.70x = 181,483,191.74
  5. Step 5: Solve for x
    x = 181,483,191.74/12,553.70
  6. Step 6: Final answer
    x = 14,456.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.